... corrosion,resistant aging, fastness, easy installation.3. Utility: machinery, autos, equipments.4.Surface treatments:deburr,polishing,sandblasting,nickel plating ... burrs& sharp edges,ball blasting, sand blasting.;3.Machining: cutting,CNC machining, milling, drilling, griding,punching,screwing etc.;4 ... .Assembly work Better products ,Better service,Better world! high precision aluminium machine part